On regular $\kappa$-bounded spaces admitting only constant continuous mappings into $T_1$ spaces of pseudo-character $\leq \kappa$

TL;DR

This paper constructs specific regular spaces that admit only constant continuous maps into certain T1 spaces, resolving open problems and extending previous results in topology.

Contribution

It introduces a method to build infinite ppa-bounded regular spaces with only constant continuous maps into T1 spaces of bounded pseudo-character.

Findings

Constructed ppa-bounded regular spaces with unique mapping properties

Resolved open problems posed by Tzannes

Extended previous results by Ciesielski, Wojciechowski, and Herrlich

Abstract

In this paper for each cardinal $\kappa$ we construct an infinite $\kappa$-bounded (and hence countably compact) regular space $R_{\kappa}$ such that for any $T_1$ space $Y$ of pseudo-character $\leq\kappa$, each continuous function $f:R_{\kappa}\rightarrow Y$ is constant. This result resolves two problems posted by Tzannes in Open Problems from Topology Proceedings and extends results of Ciesielski and Wojciechowski and Herrlich.